The SoBumpMap class is used to map a bump map onto subsequent shapes. More...

#include <Inventor/nodes/SoBumpMap.h>

Inheritance diagram for SoBumpMap:

Public Types
enum	Wrap { REPEAT = SoMultiTextureImageElement::REPEAT , CLAMP = SoMultiTextureImageElement::CLAMP }

Public Types inherited from SoNode
enum	NodeType { INVENTOR = 0x0000 , VRML1 = 0x0001 , VRML2 = 0x0002 , INVENTOR_1 = 0x0004 , INVENTOR_2_0 = 0x0008 , INVENTOR_2_1 = 0x0010 , INVENTOR_2_5 = 0x0020 , INVENTOR_2_6 = 0x0040 , COIN_1_0 = 0x0080 , COIN_2_0 = 0x0100 , EXTENSION = 0x0200 , COIN_2_2 = 0x0400 , COIN_2_3 = 0x0800 , COIN_2_4 = 0x1000 , INVENTOR_5_0 = 0x2000 , COIN_2_5 = 0x4000 , COIN_3_0 = 0x8000 , INVENTOR_6_0 = 0x10000 , COIN_4_0 = 0x20000 }

Public Member Functions
	SoBumpMap (void)

virtual void	callback (SoCallbackAction *action)

virtual void	doAction (SoAction *action)

virtual SoType	getTypeId (void) const

virtual void	GLRender (SoGLRenderAction *action)

virtual void	rayPick (SoRayPickAction *action)

Public Member Functions inherited from SoNode
virtual SoNode *	addToCopyDict (void) const

virtual SbBool	affectsState (void) const

virtual void	audioRender (SoAudioRenderAction *action)

virtual SoNode *	copy (SbBool copyconnections=FALSE) const

virtual void	copyContents (const SoFieldContainer *from, SbBool copyconnections)

virtual SoFieldContainer *	copyThroughConnection (void) const

virtual void	getBoundingBox (SoGetBoundingBoxAction *action)

virtual SoChildList *	getChildren (void) const

virtual void	getMatrix (SoGetMatrixAction *action)

SbUniqueId	getNodeId (void) const

NodeType	getNodeType (void) const

virtual void	getPrimitiveCount (SoGetPrimitiveCountAction *action)

virtual void	GLRenderBelowPath (SoGLRenderAction *action)

virtual void	GLRenderInPath (SoGLRenderAction *action)

virtual void	GLRenderOffPath (SoGLRenderAction *action)

virtual void	grabEventsCleanup (void)

virtual void	grabEventsSetup (void)

virtual void	handleEvent (SoHandleEventAction *action)

SbBool	isOverride (void) const

virtual void	pick (SoPickAction *action)

virtual void	search (SoSearchAction *action)

void	setNodeType (const NodeType type)

void	setOverride (const SbBool state)

virtual void	startNotify (void)

virtual void	write (SoWriteAction *action)

virtual void	writeInstance (SoOutput *out)

Public Member Functions inherited from SoFieldContainer
virtual void	addWriteReference (SoOutput *out, SbBool isfromfield=FALSE)

void	copyFieldValues (const SoFieldContainer *container, SbBool copyconnections=FALSE)

SbBool	enableNotify (const SbBool flag)

SbBool	fieldsAreEqual (const SoFieldContainer *container) const

void	get (SbString &fielddata)

void	get (SbString &fielddata, SoOutput *out)

virtual int	getAllFields (SoFieldList &l) const

virtual SoField *	getEventIn (const SbName &name) const

virtual SoField *	getEventOut (const SbName &name) const

virtual SoField *	getField (const SbName &name) const

SbBool	getFieldName (const SoField *const field, SbName &name) const

virtual int	getFields (SoFieldList &l) const

virtual void	getFieldsMemorySize (size_t &managed, size_t &unmanaged) const

SbBool	getIsBuiltIn (void) const

void *	getUserData (void) const

SbBool	hasDefaultValues (void) const

SbBool	isNotifyEnabled (void) const

SbBool	set (const char *const fielddata)

SbBool	set (const char fielddata, SoInput input)

void	setToDefaults (void)

void	setUserData (void *userdata) const

virtual SbBool	validateNewFieldValue (SoField field, void newval)

Public Member Functions inherited from SoBase
void	addAuditor (void *const auditor, const SoNotRec::Type type)

void	assertAlive (void) const

const SoAuditorList &	getAuditors (void) const

virtual SbName	getName (void) const

int32_t	getRefCount (void) const

SbBool	isOfType (SoType type) const
	Returns `TRUE` if the type of this object is either of the same type or inherited from type.

void	ref (void) const

void	removeAuditor (void *const auditor, const SoNotRec::Type type)

virtual void	setName (const SbName &newname)

SbBool	shouldWrite (void)

void	touch (void)

void	unref (void) const

void	unrefNoDelete (void) const

Static Public Member Functions
static SoType	getClassTypeId (void)

static void	initClass (void)
	Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.

Static Public Member Functions inherited from SoNode
static void	audioRenderS (SoAction action, SoNode node)

static void	callbackS (SoAction action, SoNode node)

static int	getActionMethodIndex (const SoType type)

static void	getBoundingBoxS (SoAction action, SoNode node)

static SoNode *	getByName (const SbName &name)

static int	getByName (const SbName &name, SoNodeList &l)

static SoType	getClassTypeId (void)

static uint32_t	getCompatibilityTypes (const SoType &nodetype)

static void	getMatrixS (SoAction action, SoNode node)

static SbUniqueId	getNextNodeId (void)

static void	getPrimitiveCountS (SoAction action, SoNode node)

static void	GLRenderS (SoAction action, SoNode node)

static void	handleEventS (SoAction action, SoNode node)

static void	initClass (void)
	Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.

static void	initClasses (void)

static void	pickS (SoAction action, SoNode node)

static void	rayPickS (SoAction action, SoNode node)

static void	searchS (SoAction action, SoNode node)

static void	writeS (SoAction action, SoNode node)

Static Public Member Functions inherited from SoFieldContainer
static void	addCopy (const SoFieldContainer orig, const SoFieldContainer copy)

static SoFieldContainer *	checkCopy (const SoFieldContainer *orig)

static void	cleanupClass (void)

static void	copyDone (void)

static SoFieldContainer *	findCopy (const SoFieldContainer *orig, const SbBool copyconnections)

static SoType	getClassTypeId (void)
	This static method returns the SoType object associated with objects of this class.

static void	initClass (void)
	Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.

static void	initCopyDict (void)

Static Public Member Functions inherited from SoBase
static void	addName (SoBase const base, const char const name)

static SbBool	connectRoute (SoInput *input, const SbName &fromnodename, const SbName &fromfieldname, const SbName &tonodename, const SbName &tofieldname)

static void	decrementCurrentWriteCounter (void)

static SoType	getClassTypeId (void)
	This static method returns the SoType object associated with objects of this class.

static SoBase *	getNamedBase (const SbName &name, SoType type)

static int	getNamedBases (const SbName &name, SoBaseList &baselist, SoType type)

static SbBool	getTraceRefs (void)

static void	incrementCurrentWriteCounter (void)

static void	initClass (void)
	Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.

static SbBool	read (SoInput input, SoBase &base, SoType expectedtype)

static SbBool	readRoute (SoInput *input)

static void	removeName (SoBase const base, const char const name)

static void	setInstancePrefix (const SbString &c)

static void	setTraceRefs (SbBool trace)

Public Attributes
SoSFString	filename

SoSFImage	image

SoSFEnum	wrapS

SoSFEnum	wrapT

Protected Member Functions
virtual	~SoBumpMap ()

virtual const SoFieldData *	getFieldData (void) const

virtual void	notify (SoNotList *list)

virtual SbBool	readInstance (SoInput *in, unsigned short flags)

Protected Member Functions inherited from SoNode
	SoNode (void)

virtual	~SoNode ()

Protected Member Functions inherited from SoFieldContainer
	SoFieldContainer (void)

virtual	~SoFieldContainer ()

Protected Member Functions inherited from SoBase
	SoBase (void)

virtual	~SoBase ()

virtual SoNotRec	createNotRec (void)

virtual void	destroy (void)

virtual const char *	getFileFormatName (void) const

SbBool	hasMultipleWriteRefs (void) const

void	writeFooter (SoOutput *out) const

SbBool	writeHeader (SoOutput *out, SbBool isgroup, SbBool isengine) const

Static Protected Member Functions
static const SoFieldData **	getFieldDataPtr (void)

Static Protected Member Functions inherited from SoNode
static const SoFieldData **	getFieldDataPtr (void)

static int	getNextActionMethodIndex (void)

static void	incNextActionMethodIndex (void)

static void	setCompatibilityTypes (const SoType &nodetype, const uint32_t bitmask)

static void	setNextActionMethodIndex (int index)

Static Protected Member Functions inherited from SoBase
static uint32_t	getCurrentWriteCounter (void)

static void	staticDataLock (void)

static void	staticDataUnlock (void)

Additional Inherited Members
Protected Types inherited from SoBase
enum	BaseFlags { IS_ENGINE = 0x01 , IS_GROUP = 0x02 }

Protected Attributes inherited from SoNode
SbUniqueId	uniqueId

Protected Attributes inherited from SoFieldContainer
SbBool	isBuiltIn

Static Protected Attributes inherited from SoNode
static int	nextActionMethodIndex = 0

static SbUniqueId	nextUniqueId = 1

Detailed Description

The SoBumpMap class is used to map a bump map onto subsequent shapes.

SoBumpMap has support for two types of maps. If the image is a three component (RGB) image, it will be treated as a normal map, where the red image component equals the X normal component, green equals Y, and blue is Z. See http://www.paulsprojects.net/tutorials/simplebump/simplebump.html for a nice introduction about bump mapping and normal maps.

If the image is a grayscale image, it will be treated as a height map, and automatically converted to a normal map.

For bump mapping to work with extension nodes for Coin, the SoShape::generatePrimitives() method must be correctly implemented for the shape. This is needed since tangent space coordinates needs to be calculated for each vertex in the shape. All shape nodes which are a standard part of Coin meets this criteria.

Bump mapping in Coin requires OpenGL 1.3, or the following OpenGL extensions: GL_ARB_multitexture, GL_ARB_texture_cube_map, GL_ARB_texture_env_combine and GL_ARB_texture_env_dot3 (or the corresponding EXT extensions). If the runtime system doesn't meet these requirements, Coin will post a warning and the bump map will simply be ignored.

GL_ARB_vertex_program and GL_ARB_fragment_program is required to get specular lighting on the bumps. If these extensions are not available, the bumps will be rendered with diffuse lighting only.

Bump mapped objects will be rendered with multiple rendering passes. One extra pass per light source for diffuse only bumps, and two extra passes per light source for diffuse and specular bumps. You can turn off specular lighting on the bumps by setting specularColor to (0.0, 0.0, 0.0).

FILE FORMAT/DEFAULTS:

BumpMap {
    filename ""
    image 0 0 0
 
    wrapS REPEAT
    wrapT REPEAT
}

Since: Coin 2.2

Member Enumeration Documentation

◆ Wrap

enum SoBumpMap::Wrap

Enumeration of wrapping strategies which can be used when the bump map doesn't cover the full extent of the geometry.

Enumerator
REPEAT	Repeat bump map when coordinate is not between 0 and 1.
CLAMP	Clamp coordinate between 0 and 1.

Constructor & Destructor Documentation

◆ SoBumpMap()

SoBumpMap::SoBumpMap ( void )

Constructor.

◆ ~SoBumpMap()

SoBumpMap::~SoBumpMap ( )

protectedvirtual

Destructor. Frees up internal resources used to store texture image data.

Member Function Documentation

◆ callback()

void SoBumpMap::callback ( SoCallbackAction * action )

virtual

Action method for SoCallbackAction.

Simply updates the state according to how the node behaves for the render action, so the application programmer can use the SoCallbackAction for extracting information about the scene graph.

Reimplemented from SoNode.

◆ doAction()

void SoBumpMap::doAction ( SoAction * action )

virtual

This function performs the typical operation of a node for any action.

Reimplemented from SoNode.

◆ getClassTypeId()

SoType SoBumpMap::getClassTypeId ( void )

static

This static method returns the SoType object associated with objects of this class.

◆ getFieldData()

const SoFieldData * SoBumpMap::getFieldData ( void ) const

protectedvirtual

Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL.

Reimplemented from SoFieldContainer.

◆ getFieldDataPtr()

const SoFieldData ** SoBumpMap::getFieldDataPtr ( void )

staticprotected

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

Returns the SoFieldData class which holds information about fields in this node.

◆ getTypeId()

SoType SoBumpMap::getTypeId ( void ) const

virtual

Returns the type identification of an object derived from a class inheriting SoBase. This is used for runtime type checking and "downward" casting.

Implements SoBase.

◆ GLRender()

void SoBumpMap::GLRender ( SoGLRenderAction * action )

virtual

Action method for the SoGLRenderAction.

This is called during rendering traversals. Nodes influencing the rendering state in any way or want to throw geometry primitives at OpenGL override this method.

Reimplemented from SoNode.

◆ notify()

void SoBumpMap::notify ( SoNotList * l )

protectedvirtual

Notifies all auditors for this instance when changes are made.

Reimplemented from SoNode.

◆ rayPick()

void SoBumpMap::rayPick ( SoRayPickAction * action )

virtual

Action method for SoRayPickAction.

Checks the ray specification of the action and tests for intersection with the data of the node.

Nodes influencing relevant state variables for how picking is done also override this method.

Reimplemented from SoNode.

◆ readInstance()

SbBool SoBumpMap::readInstance	(	SoInput *	in,
		unsigned short	flags )

protectedvirtual

This method is mainly intended for internal use during file import operations.

It reads a definition of an instance from the input stream in. The input stream state points to the start of a serialized / persistent representation of an instance of this class type.

TRUE or FALSE is returned, depending on if the instantiation and configuration of the new object of this class type went OK or not. The import process should be robust and handle corrupted input streams by returning FALSE.

flags is used internally during binary import when reading user extension nodes, group nodes or engines.

Reimplemented from SoNode.

Member Data Documentation

◆ filename

SoSFString SoBumpMap::filename

Bump map (or normal map) filename, referring to a file on disk in a supported image bitmap format. See SoBumpMap::filename for more information.

◆ image

SoSFImage SoBumpMap::image

Inline image data. Defaults to contain an empty bump map.

◆ wrapS

SoSFEnum SoBumpMap::wrapS

Wrapping strategy for the S coordinate when the bump map is narrower than the object to map onto.

Default value is SoBumpMap::REPEAT.

◆ wrapT

SoSFEnum SoBumpMap::wrapT

Wrapping strategy for the T coordinate when the bump map is shorter than the object to map onto.

Default value is SoBumpMap::REPEAT.

The documentation for this class was generated from the following files:

SoBumpMap.h
SoBumpMap.cpp

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Member Functions

Static Protected Member Functions

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ Wrap

Constructor & Destructor Documentation

◆ SoBumpMap()

◆ ~SoBumpMap()

Member Function Documentation

◆ callback()

◆ doAction()

◆ getClassTypeId()

◆ getFieldData()

◆ getFieldDataPtr()

◆ getTypeId()

◆ GLRender()

◆ notify()

◆ rayPick()

◆ readInstance()

Member Data Documentation

◆ filename

◆ image

◆ wrapS

◆ wrapT